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Komárí Vízka Hill (Mückenberg), Horní Krupka (Obergraupen), Krupka (Graupen), Krušné Hory Mts (Erzgebirge), Ústí Region, Czech Republic

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Latitude & Longitude (WGS84): 50° 42' 24'' North , 13° 51' 20'' East
Latitude & Longitude (decimal): 50.70690,13.85567
GeoHash:G#: u31b7qcmh
Locality type:Hill
Köppen climate type:Cfb : Temperate oceanic climate

Ancient workings on a greisen lens on Komárí Vízka hill (Mückenberg). The greisen body was initially explored through open cuts, some of them started in the late 14th century. The large open cut ('Pinge') near the summit of the hill, which is now largely overgrown, was begun in the late 15th century. During the 18th century, a shaft (Göppel shaft) was sunk just SW of the open cut. This is now backfilled.

Regions containing this locality


Country (Former) - 1,995 mineral species & varietal names listed

Bohemia (Böhmen; Boehmen), Czech Republic

Region (Historical) - 1,456 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

5 valid minerals.

Detailed Mineral List:

Formula: SnO2
Reference: Lapis 23(4), 18-34 (1998)
Formula: CuFeS2
Reference: Lapis 23(4), 18-34 (1998)
Formula: CaF2
Reference: Lapis 23(4), 18-34 (1998)
Formula: MoS2
Reference: R Kunze collection
Formula: FeS2
Reference: Lapis 23(4), 18-34 (1998)

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Group 3 - Halides
Group 4 - Oxides and Hydroxides

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:1
AmBnXp, with (m+n):p = 1:2

List of minerals for each chemical element

O CassiteriteSnO2
F FluoriteCaF2
S ChalcopyriteCuFeS2
S MolybdeniteMoS2
S PyriteFeS2
Ca FluoriteCaF2
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Cu ChalcopyriteCuFeS2
Mo MolybdeniteMoS2
Sn CassiteriteSnO2

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

Early Paleozoic - Neoproterozoic
443.8 - 1000 Ma

ID: 2617435

Age: Neoproterozoic to Ordovician (443.8 - 1000 Ma)

Description: metamorphic intrusive rocks

Comments: Transitions to migmatites; Metamorphic age: pre- to early(?)-Variscan

Lithology: Orthogneiss: granitic, granodioritic

Reference: Toloczyki, M., P. Trurnit, A. Voges, H. Wittekindt, A. Zitzmann. Geological Map of Germany 1:M. Bundesanstalt für Geowissenschaften und Rohstoffe. [94]

Ediacaran - Cryogenian
541 - 720 Ma

ID: 3144430
Cadomian gneiss

Age: Neoproterozoic (541 - 720 Ma)

Description: high grade metamorphic

Lithology: Gneiss

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

541 - 1000 Ma

ID: 3188473
Neoproterozoic crystalline metamorphic rocks

Age: Neoproterozoic (541 - 1000 Ma)

Lithology: Crystalline metamorphic rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Sejkora, J. (1998) Krupka (Graupen), Tschechien: Klassisches Grubenrevier im Böhmischen Erzgebirge. Bergbaugeschichte und Geologie, wichtige Mineralfundstellen im Bezirk Krupka, die sammlerisch interessantesten Mineralien, komplette Mineralliste. Lapis, 23(4), 18-34.

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